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A runner who collided with the Prime Minister prompting security concerns has told the BBC he "did not see him."

Jogger Dean Farley who collided with the PM says he 'did not see David Cameron'. Credit: SWNS

Dean Farley said: "I didn't see David Cameron. I didn't know it was David Cameron until they let me out of the police van an hour later and told me what I'd actually done."

He said he asked the officers repeatedly what he had done as he was detained in the van and one officer said to him: "You know what you've done, be quiet."

"I gathered I'd run into somebody quite important but I couldn't know it was David Cameron. It begs the question, how good is Cameron's security if I managed to run between it before they stopped me?", Mr Farley added.

Mr Farley denied the collision was some sort of protest, adding that he was "not a particularly political-minded person".

A witness to the incident involving David Cameron in Leeds today has described how the Prime Minister "sidestepped" the 28-year-old man in a "lovely little move".

Chris Wilson said: "It looked like Cameron sidestepped him. It was a lovely little move. He should be on the stage, really. And then he was tackled by the person behind. And then he [Cameron] was in the car and the car was gone."

He added: "They were on him. They were like flies round poo. One minute he was down, then he was up again and moving. It was fast."

He ran about 10 yards across the road towards the Prime Minister, who looked around, but did not seemed worried, Mr Wilson said.

Dean Farley later said on Facebook that he was the man involved in the incident.